CNC 선반 가공 시 클램핑 시 주의사항

CNC 선반의 가공 기술은 일반 선반의 가공 기술과 유사합니다.. 하지만, CNC 선반은 일회성 클램핑이기 때문에, 모든 터닝 공정을 완료하기 위한 지속적이고 자동적인 처리. 그러므로, 다음 측면에주의를 기울여야합니다:
1. 합리적인 절단량 선택
Whether the selection of cutting parameters (ap, 에프, v) is reasonable, plays a very important role in whether the machine tool can fully utilize the potential of the machine tool and the cutting performance of the tool to achieve high quality, high yield, low cost and safe operation.
When rough turning, first consider choosing a turning depth ap as large as possible, then choosing a larger feed amount f, and finally determining an appropriate cutting speed v. Increasing the turning depth ap can reduce the number of passes, and increasing the feed f is beneficial to chip breaking. 그러므로, it is beneficial to select the rough turning amount according to the above principles to improve production efficiency, reduce tool consumption, and reduce processing costs.

CNC 선반의 클램핑 설계

미세 선삭 중, the machining accuracy and surface roughness are required to be high, and the machining allowance is not large and more uniform. 그러므로, when choosing the amount of cutting for finishing, it is important to consider how to ensure the quality of the machining, and on this basis, maximize the productivity. 그러므로, a smaller (but not too small) turning thickness ap and feed f should be used for fine turning. And choose high cutting performance tool materials and reasonable geometric parameters to increase the cutting speed v as much as possible.

2. Choose a tool reasonably
1) When rough turning, choose a tool with high strength and good durability to meet the requirements of large turning depth and large feed when rough turning;
2) When finishing turning, choose tools with high precision and good durability to ensure the requirements of machining accuracy.
3) In order to reduce the time of tool change and facilitate tool setting, machine clamp blades should be used as much as possible.

3. Choose fixtures reasonably
1) Try to use general fixtures to clamp the workpiece, avoid using special fixtures;
2) The positioning datums of the parts coincide to reduce positioning errors.

4. Determine the processing track
The processing route is the movement track and direction of the tool relative to the part during the processing of the index-controlled machine tool:
1) It should be able to ensure the processing accuracy and surface roughness requirements;
2) The processing route should be shortened as much as possible to reduce the tool idle travel time.

5. The relationship between machining track and machining allowance
현재, under the condition that the CNC lathe has not reached the popular use, the excess margin on the blank, especially the margin containing the forged and cast hard skin layer, should be arranged on the ordinary lathe for processing. If you must use a CNC lathe to process, you need to pay attention to the flexible design of the program.

6. Jig mounting points. 현재, the connection between the hydraulic chuck and the hydraulic clamping cylinder is realized by a tie rod. The main points of hydraulic chuck clamping are as follows:
First use a moving hand to remove the nut on the hydraulic cylinder, remove the pull tube, and pull it out from the rear of the spindle, and then use the moving hand to remove the chuck fixing screw to remove the chuck.